
Originally Posted by
Activision
PC players running Windows 7 no longer receive software and security updates to the operating system from Microsoft, which can leave a PC at greater risk for viruses and malware. The absence of updates to Windows 7 also leaves the games and their players vulnerable to security risks, making this change necessary.
PC players will not be able to play Call of Duty: Black Ops Cold War on PCs running Windows 7 beginning September 7, 2021, or Call of Duty: Modern Warfare and Call of Duty: Warzone beginning September 8, 2021.
Therefore, players will need to upgrade to Windows 10 or to a PC running Windows 10 in order to continue enjoying these games on PC.
Please note: Before upgrading a PC from Windows 7 or Windows 8 to Windows 10, make sure that your PC can support the Computer Specifications and System Requirements for Windows 10.